[K/N] keep internal members in header klibs

This is also the behavior of jvm-abi-gen and desired to support
friend modules.
^KT-65442

native/native.tests/testData/klib/header-klibs/comparison/classPrivateMembers/sameAbi/A.kt

@@ -4,8 +4,8 @@ class A {
     val publicVal = 0
     fun publicMethod() = 0
 
-    internal val internalVal = 42
-    internal fun internalMethod() = 42
+    internal val internalVal = 0
+    internal fun internalMethod() = 0
 
     protected val protectedVal = 0
     protected fun protectedMethod() = 0

native/native.tests/testData/klib/header-klibs/comparison/privateInterface/base/test.kt

@@ -1,7 +1,7 @@
 package test
 
 private interface A {
-    fun foo() = 0
+    fun foo(): Int { if (true) return 1 else return 0 }
     fun bar(): String
 }
 

native/native.tests/testData/klib/header-klibs/comparison/privateInterface/sameAbi/test.kt

@@ -1,7 +1,7 @@
 package test
 
 private interface A {
-    fun foo() = 42
+    fun foo(): Int { if (true) return 0 else return 1 }
     fun bar(): String
 }
 

native/native.tests/testData/klib/header-klibs/comparison/syntheticAccessors/base/test.kt

@@ -4,4 +4,4 @@ private val x = 1
 
 object A { fun f() = x }
 
-val y = 2
+val y = (0..20).random()

native/native.tests/testData/klib/header-klibs/comparison/syntheticAccessors/sameAbi/test.kt

@@ -2,4 +2,4 @@ package test
 
 object A { fun f() = 1 }
 
-val y = 2
+val y = (30..50).random()

native/native.tests/testData/klib/header-klibs/comparison/topLevelPrivateMembers/base/utils.kt

@@ -1,12 +1,7 @@
 package test
 
-val publicVal = 0
-const val publicConst = 0
-fun publicFun() = 0
-
-internal val internalVal = 0
-internal const val internalConst = 0
-internal fun internalFun() = 0
+val publicVal = (0..10).random()
+fun publicFun() = (0..10).random()
 
 private val privateVal = 0
 private const val privateConst = 0

native/native.tests/testData/klib/header-klibs/comparison/topLevelPrivateMembers/sameAbi/utils.kt

@@ -1,9 +1,4 @@
 package test
 
-val publicVal = 0
-const val publicConst = 0
-fun publicFun() = 0
-
-internal val internalVal = 0
-internal const val internalConst = 0
-internal fun internalFun() = 0
+val publicVal = (0..20).random()
+fun publicFun() = (0..20).random()